I put a new topend kit in last winter, by the time I was done the snow was gone so I didn't ride it. I remember it wasn't running right after the rebuild either.

I went out today and tried starting it and it just wouldn't start for anything. I took the right side spark plug out and she started and ran pretty good on just the left cylinder. I put the sparkplug back in and it wouldn't start with or without the wire on......even if I put ether in.

thats the first thing I checked.......its got amazing spark. And the plugs are brand new. I got spark, fuel, and pretty good compression cuz its a bitch to pull with both spark plugs in.......not too hard to pull if I have the right one out.

Also, it sorta backfires when I have both plugs hooked up and I'm trying to pull the rope......but if I have just the left plug in and no plug in the rh side it fires right up.

Could you have put the right side piston in backwards? Sigle carb or twin? Maybe try switching carbs?

I swear I'll kick my self REALLY hard if I did that.......that thought crossed my mind though, and its one of the first things I'm going to check. I know the arrow goes towards the exhaust but I'm pretty sure I checked it when I installed it but even the best screw up (and im not the best)

ok I tore the engine down and atleast the piston was in the right posistion. But I guess I installed the circlip incorrectly because it came out when the engine was running (it ran for 5 minutes after the rebuild and quit) The circlip rubbed a nice groove up and down the piston and cylinder, they are shot now. Mistakes costs money!! I'm gonna fix her and sell her to the first decent offer I get. We don't get enough snow here for a snowmobile to be worthwhile.

Hi I am new to this site. Sorry I don't neam to hijak this tread but I have a 94 arctic cat jag 440 fc deluxe with no spark. Changed plugs, replaced coil, cdi. Still no spark. have around 150 ohms reading on ignition coil. unplugged 4 wire harness and jumped the brown and black wire to eliminate any switching problems. no spark. This one has me stumped. I must be missing something. It was running great for several days but would not start one morning. Any help would be greatly appreciated. Thanks

Register Now

In order to be able to post messages on the Snowmobile Forum: Your #1 Snowmobile Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:

Password

Please enter a password for your user account. Note that passwords are case-sensitive.

Password:

Confirm Password:

Email Address

Please enter a valid email address for yourself.

Email Address:

OR

Log-in

User Name

Password

Remember Me?

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.